Luting for coal-stoves and furnaces



W. B. TREADWELL.

Liningfor Stove and Furnace. -No. 21,707. Patemdbct, 5, 1858.

UNITED STATES PATENT OFFICE.

W. B. TREADWELL, OF ALBANY, NEW YORK.

LINING FOR COAL-STOVES AND FURNACES.

Specification of Letters Patent No. 21,707, dated October 5, 1858.

To all whom it may concern:

Be it known that I, WVILLIAM B. Tenan- WELL, of the city of Albany, State of New York, have invented a new and useful Method of Constructing the Lining for the Fire-Chambers of Coal-Stoves and Furnaces; and I declare the following specification, with the drawings attached as part of the same, to be a full and perfect description thereof.

It is well understood to be an important matter in the construction of stoves or furnaces for the burning of anthracite coal in order to obtain the most thorough combustion of the fuel, to line the fire chamber with some nonconducting or slowly conducting substance, in order to keep the heat of the fire concentrated upon itself as much as possible, and that for that purpose fire clay lining, or very thick iron pots are employed. The semifusion of the coal with the clay and their adhesion together or clinkering as it is called is an objection to its use; while on the other hand the iron pot transmits the caloric too rapidly for the best condition of combustion for the coal.

My invention proposes for these, the substitution of metal blocks filled with silicious sand as the substantial lining for the firechamber, its well known property of transmitting and radiating heat slowly allowing just enough of the caloric to pass into the room, wherein the stove is used, yet not so as to impair the effect of the sufiicient concen tration of heat in the body of the coal itself to produce thorough combustion. I11 order to do this and to put the lining into the most convenient form for management, I construct the hollow block: or metal similar in form to the segments of fire-brick now used to line stoves, and of about the same thickness.

Two kinds are shown in the drawings.

Figure 1 represents that being a segment of a circle (part of its front broken to show the contained sand) for a cylindrical fire box lining. Fig. 2 represents a square prism (also showing the sand) for the lining of any rectangular or fiat sided fire box.

They are to be made thin shells to be filled with sand, and to be formed into small blocks, so as to be easily put together like bricks, to form a larger or smaller extent of lining as may be needed. They are made in this way also, to be in a portable form for the facility of sale and transportation separate from the stoves.

I am aware that silicious sand has been used in certain arrangements and combinations for the lining of fire or hot air chain bers and therefore I do not claim sand as an article wherewith to line fire chambers but lVhat I claim and desire to secure by Letters Patent is The employment of hollow blocks of metal filled in with silicious sand as a new article of manufacture to be used as a substitute in the place of fire brick for the lining of the fire chambers of stoves and furnaces substantially as set forth and described in the within specification.

WM. B. TREADI'VELL. lVitnesses Ron. VANEK DE VVITT, H. S. MGCALL. 

